Odds On
Spin a wheel whose odds you can read for a growing payoff, or bank what you've built before a bust slot wipes it — the expected value is right there to guide you.
How to play
Each round, choose to spin for more or bank your stash. The wheel shows its odds: most slots add to your round stake, but a bust slot zeros everything you've built that round. Bank to lock your winnings into your safe stash before a bust hits. Between rounds you draft a modifier card that reshapes the wheel — and the displayed expected value tells you when the odds have turned for or against you.
- Spin to grow your round stake, or bank to keep it safe.
- Landing on a bust slot wipes the unbanked stake for that round.
- Draft a modifier between rounds to change the wheel's slots and odds.
- Watch the expected value and bust chance to time your bank.
Game modes
- Daily: the same run and draft for everyone.
- Practice: a fresh random run each time.
Controls
- Desktop: click Spin or Bank, and click a modifier card to draft it.
- Phone & tablet: tap Spin or Bank, then tap a modifier card between rounds.
Tips & strategy
- Bank once the expected value of another spin drops below what you'd risk losing.
- A rising bust probability is your cue to lock in — don't chase a big stake into a likely wipe.
- Draft modifiers that cut bust slots or lift payoffs, not just the flashiest reward.
What you'll learn
Odds On teaches probability and expected value through push-your-luck spins where the underlying math is always shown, so risk becomes calculation.
- Skills: probability, expected value, risk and decision-making, fractions/percentages
- Best for: roughly grades 7–10 (ages 12–16)
- For parents & teachers: expected value made visceral through real decisions.
About Odds On
Odds On is an original, free browser game that teaches probability and expected value through push-your-luck spins where the math is always shown. Play instantly, no install needed.
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